8. She neglects you publicly

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Sometimes a woman's interest is caught by a passerby, a friend from college, an old colleague from work or an old boyfriend. As a man, you don't necessarily need to be the paramount priority in her life, but you do expect to warrant enough regard not to be ignored when this sort of thing occurs. It's demeaning to watch as your girlfriend carries on a conversation with this person, while you're nervously laughing along, smiling and nodding silently because she hasn't introduced you. This shows just how low you are on her priority list.